COVER INFORMATION Station: VLBA_OV (Code Ov ) Experiment: VLBA/VLTI Obs. of S Ori Exp. Code: BB192a Schedule Version: 2.00 Processed by SCHED version: NRAO internal release of 4 October 2004 PI: Dave Boboltz Address: USNO 3450 Massachusetts Ave., NW Washington, DC 20392-5420, USA Phone: 202-762-1488 EMAIL: dboboltz@usno.navy.mil Fax: 202-762-1514 Phone during observation: 202-762-1488 Observing mode: Notes: RCP/LCP. 7mm VLBA 5hr track Schedule for VLBA_OV (Code Ov ) Page 2 VLBA/VLTI Obs. of S Ori UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 17 Jan 2005 Day 17 --- Next scan frequencies: 42809.23 42809.23 43110.68 43110.68 Next BBC frequencies: 609.23 609.23 910.68 910.68 Next scan bandwidths: 8.00 8.00 8.00 8.00 02 26 01 0423-013 02 19 22 41.9 136.2 -2.1 -33.5 0 1 1 0 02 26 01 02 35 59 --- 02 29 22 43.3 139.0 -1.9 -31.5 598 F 1 7978 02 35 59 SORI 02 29 22 30.8 124.9 -3.0 -40.9 -31 1 2 7978 02 35 59 02 59 55 --- 02 53 22 34.6 130.4 -2.6 -37.5 1405 R 1 8074 02 59 55 SORI 02 53 22 34.6 130.4 -2.6 -37.5 -4 1 1 8074 02 59 55 03 23 51 --- 03 17 22 38.0 136.5 -2.2 -33.4 1432 F 2 11073 03 25 51 0423-013 03 19 22 48.7 155.3 -1.1 -19.5 92 1 2 11073 03 25 51 03 35 49 --- 03 29 22 49.4 158.9 -0.9 -16.7 598 R 2 16149 03 35 49 SORI 03 29 22 39.6 139.7 -2.0 -31.1 -26 1 3 16149 03 35 49 03 59 45 --- 03 53 22 42.5 146.7 -1.6 -26.0 1410 F 1 2999 03 59 45 SORI 03 53 22 42.5 146.7 -1.6 -26.0 -4 1 4 2999 03 59 45 04 23 41 --- 04 17 22 44.9 154.3 -1.2 -20.3 1432 R 1 13053 04 25 41 0359+509 04 19 22 75.8 -12.6 0.3 164.0 2 1 4 13053 04 25 41 04 35 40 --- 04 29 22 75.3 -18.5 0.5 156.3 598 R 1 5075 04 35 40 SORI 04 29 22 45.8 158.3 -1.0 -17.2 -124 1 3 5075 04 35 40 04 59 36 --- 04 53 22 47.3 166.8 -0.6 -10.5 1312 F 2 14072 04 59 36 SORI 04 53 22 47.3 166.8 -0.6 -10.5 -4 1 4 14072 04 59 36 05 23 32 --- 05 17 22 48.0 175.6 -0.2 -3.5 1432 R 2 1980 05 25 31 0423-013 05 19 22 49.3 201.7 0.9 17.1 96 1 5 1980 05 25 31 05 35 30 --- 05 29 22 48.5 205.3 1.1 19.9 598 F 1 5998 05 35 30 SORI 05 29 22 48.1 180.0 0.0 0.0 -23 1 6 5998 05 35 30 05 59 26 --- 05 53 22 47.7 188.9 0.4 7.1 1413 R 1 10054 05 59 26 SORI 05 53 22 47.7 188.9 0.4 7.1 -4 1 5 10054 05 59 26 06 23 22 --- 06 17 22 46.6 197.6 0.8 14.0 1432 F 2 9093 06 25 21 0423-013 06 19 22 43.0 221.5 1.9 31.8 98 1 5 9093 06 25 21 06 35 20 --- 06 29 22 41.7 224.3 2.1 33.8 598 F 2 17071 Schedule for VLBA_OV (Code Ov ) Page 3 VLBA/VLTI Obs. of S Ori UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 17 Jan 2005 Day 17 --- 06 35 20 SORI 06 29 22 45.8 201.8 1.0 17.2 -21 1 7 17071 06 35 20 06 59 16 --- 06 53 22 43.7 209.7 1.4 23.3 1415 F 1 1019 06 59 16 SORI 06 53 22 43.7 209.7 1.4 23.3 -4 1 8 1019 06 59 16 07 26 11 --- 07 20 22 40.7 217.8 1.9 29.3 1612 R 1 12640 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bb192.set Matches group v7mm_b8 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 2 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 42200.00 42200.00 42200.00 42200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.4 7.4 11.6 The following frequency sets based on this setup were used. Frequency Set: 1 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 42809.23 42809.23 43110.68 43110.68 BBC fr= 609.23 609.23 910.68 910.68 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 10, 18, 26 track2= 3, 11, 19, 27 barrel=roll_auto SOURCE LIST -- VLBA/VLTI Obs. of S Ori Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) (B1950) (J2000) (Date) * 0423-013 04 20 43.539823 * 04 23 15.800700 04 23 31.662925 -01 27 28.69871 *-01 20 33.06400 -01 19 49.70250 From catalog imbedded in main SCHED input file. Doppler based on other sources. * 0359+509 03 55 45.261399 * 03 59 29.747300 03 59 52.775729 50 49 20.28605 * 50 57 50.16200 50 58 56.98644 From catalog imbedded in main SCHED input file. Doppler based on other sources. * SORI 05 26 32.603394 * 05 29 00.894800 05 29 16.622779 -04 43 53.21390 *-04 41 32.74800 -04 41 16.36295 From catalog imbedded in main SCHED input file. Doppler based on LSR frame and radio definition. Velocities: 18.00 18.00 18.00 18.00 The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) 0423-013 123.4 0359+509 125.2 SORI 135.8 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg